# US 2019/0356242 A1 · Actuator element using carbon electrode

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- Number: US 2019/0356242 A1
- Document ID: US20190356242A1
- Status: Published application
- Kind: A1
- Application number: 16/439,966
- Filed: 2019-06-13
- Published: 2019-11-21
- Earliest claimed: 2012-03-30
- Assignees: National Institute of Advanced Industrial Science and Technology
- Applicants: National Institute of Advanced Industrial Science & Technology
- Inventors: Takushi Sugino; Kinji Asaka; Isao Takahashi; Tomomasa Takatsuka; Kenichi Mitsumori; Nobuaki Haga
- Web page: https://patentgrep.com/patent/US20190356242A1

## CPC

- H01B 1/24: the conductive material comprising carbon-silicon compounds, carbon or silicon
- B32B 9/045: {of synthetic resin}
- B32B 27/08: of synthetic resin
- B32B 27/20: using fillers, pigments, thixotroping agents
- B81B 3/0021: {Transducers for transforming electrical into mechanical energy or vice versa (dynamo-electric machines H02K99/00; electrostatic machines H02N1/00; piezoelectric devices H10N30/00)}
- C08K 3/041: {Carbon nanotubes}
- F03G 7/009: {Actuators with elements stretchable when contacted with liquid rich in ions, with UV light or with a salt solution}
- F03G 7/0121: {Electroactive polymers}
- F03G 7/029: {characterised by the material or the manufacturing process, e.g. the assembly}
- H02N 1/002: {Electrostatic motors}
- B32B 2262/106: Carbon fibres, e.g. graphite fibres
- B32B 2307/202: Conductive
- B32B 2457/00: Electrical equipment
- B81B 2201/032: Bimorph and unimorph actuators, e.g. piezo and thermo
- C08K 3/044: {Carbon nanohorns or nanobells}
- C08K 3/046: {Carbon nanorods, nanowires, nanoplatelets or nanofibres}
- C08K 5/315: Compounds containing carbon-to-nitrogen triple bonds
- C08K 5/3445: Five-membered rings
- C08K 2201/011: Nanostructured additives
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B81B: MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES (piezoelectric, electrostrictive or magnetostrictive elements per se H10N30/00, H10N35/00)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- F03G: SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR (arrangements in connection with power supply in vehicles from force of nature B60K16/00; electric propulsion with power supply in vehicles from force of nature B60L8/00)
- H02N: ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR

## Abstract

An object of this invention is to create an actuator in which the amount of deformation is maintained and no displacement in the reverse direction occurs, even when a constant voltage is continuously applied for a long period of time. As a means for achieving the above object, the invention provides a conductive thin film comprising a polymer gel containing at least one organic molecule selected from the group consisting of electron-donating organic molecules and electron-withdrawing organic molecules, a nano-carbon material, an ionic liquid, and a polymer.

## Claims

### Claim at position 1

1-11. (canceled)

### Claim 12

A laminate comprising:
one or more conductive thin films and,
one or more electrolyte membranes including an ionic liquid and a polymer,
wherein each of the one or more of conductive thin film comprises a homogeneous mixture comprising 5-90% by weight of a nano-carbon material, 5-80% by weight of an ionic liquid, 4-70% by weight of a polymer, and an organic molecule component comprising at least one electron-withdrawing organic molecule other than tetracyanoquinodimethane (TCNQ),
wherein the organic molecule component is present in an amount of 20 to 100 parts by weight per 50 parts by weight of the nano-carbon material, and
wherein the homogeneous mixture forms a gel.

### Claim 13 (depends on 12)

The laminate according to claim 12,
wherein the organic molecule component further comprises at least one electron-donating organic molecule.

### Claim 14 (depends on 12)

The laminate according to claim 12,
wherein the polymer in the conductive thin film is the same as the polymer in the electrolyte membranes.

### Claim 15 (depends on 12)

The laminate according to claim 12,
wherein the nano-carbon material includes at least one of carbon nanotubes, carbon nanohorns, and carbon nanofibers.

### Claim 16 (depends on 12)

The laminate according to claim 12,
wherein the nano-carbon material further includes a conductive additive.

### Claim 17 (depends on 12)

An actuator element comprising the laminate according to claim 12.

### Claim 18 (depends on 13)

An actuator element comprising the laminate according to claim 13.

### Claim 19 (depends on 14)

An actuator element comprising the laminate according to claim 14.

### Claim 20 (depends on 15)

An actuator element comprising the laminate according to claim 15.

### Claim 21 (depends on 16)

An actuator element comprising the laminate according to claim 16.

### Claim 22 (depends on 17)

The actuator element according to claim 17, comprising at least two conductive thin film layers each comprising the conductive thin film as an electrode and provided on a surface or surfaces of an electrolyte membrane in such a manner that the conductive thin film layers are insulated from one another, the electrolyte membrane comprising an ionic liquid and a polymer, and the actuator element being deformable by applying a potential difference between the conductive thin film layers.

### Claim 23 (depends on 18)

The actuator element according to claim 18, comprising at least two conductive thin film layers each comprising the conductive thin film as an electrode and provided on a surface or surfaces of an electrolyte membrane in such a manner that the conductive thin film layers are insulated from one another, the electrolyte membrane comprising an ionic liquid and a polymer, and the actuator element being deformable by applying a potential difference between the conductive thin film layers.

### Claim 24 (depends on 19)

The actuator element according to claim 19, comprising at least two conductive thin film layers each comprising the conductive thin film as an electrode and provided on a surface or surfaces of an electrolyte membrane in such a manner that the conductive thin film layers are insulated from one another, the electrolyte membrane comprising an ionic liquid and a polymer, and the actuator element being deformable by applying a potential difference between the conductive thin film layers.

### Claim 25 (depends on 20)

The actuator element according to claim 20, comprising at least two conductive thin film layers each comprising the conductive thin film as an electrode and provided on a surface or surfaces of an electrolyte membrane in such a manner that the conductive thin film layers are insulated from one another, the electrolyte membrane comprising an ionic liquid and a polymer, and the actuator element being deformable by applying a potential difference between the conductive thin film layers.

### Claim 26 (depends on 21)

The actuator element according to claim 21, comprising at least two conductive thin film layers each comprising the conductive thin film as an electrode and provided on a surface or surfaces of an electrolyte membrane in such a manner that the conductive thin film layers are insulated from one another, the electrolyte membrane comprising an ionic liquid and a polymer, and the actuator element being deformable by applying a potential difference between the conductive thin film layers.